Pump.



www

M. HARVEY.

PUMP.

APPLIOATION FILED M124, 1914.

THE NORRIS PETERS co.. PHom-LITHG.. wASHlNGrON. D4 C Patented Feb. 23, 1915.

MILLER HARVEY, 0F N ILES. CALIFORNIA.

PUMP.

Specication of Letters Patent.

Patented Feb. 23, 1915.

Application mea January 24, 1914. serial No. 814,162.

ycitizen of the United States, residing at Niles, in the county of Alameda and State of California, have invented certain new and useful Improvements in Pumps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to pumps and more particularly to that class of pumps known as deep well double acting pumps and has for one of its objects the construction of a pump wherein the water from the well to the point of discharge is directed incontinuous and approximately straight course through the pump whereby the excessive friction and jar occasioned by the starting and stoppingl of the column of water is reduced to a minimum.

A further object of this invention is the construction of a pump whereby the reverse direction of the column of water is obviated, thus removing the deleterious effects resulting from the settlement of sand in the working parts of the pump whereas'the destruction of the packing is thus eliminated.

A still further object of this invention is the provision of means for firmly holding the valve seats in their respective positions within the pump cylinder and to insure tight joints thereat. And a still further object of my invention is the construction of a double acting pump comprising few parts, simple in construction, eflicient in purpose, cheap to manufacture and the parts thereof capable of ready removal for repairs and at a nominal cost.

These and other objects will more fully appear and the nature of the invention be more clearly understood b v the construction, combination, and arrangement of parts as described in the following specification, deined in the appended claims and illustrated in the accompanying drawing, in which the figure of the drawing is a vertical, sectional view of the pump illustrating the parts thereof in assembled relation and in operative position.

Referring to the drawing, A denotes the barrel or interior cylinder of the pump and provides the lower suction chamber B and the upper suction chamber C, and surrounding the cylinder A is the auxiliary or supplemental cylinder D being of greater diameter than the cylinder A to provide the auxiliary suction chamber E.

Mounted upon the upper ends of the cylinders A and D is the nipple or reducer 1, provided with the internal screw threads 2 at the upper end thereof and at its central portions with the annular shoulder 4 and the straight annular wall 3 for part of its length the remainder of the wall 3 diverging upwardly as at 5. The lower end of the reducer l, is provided with the reduced depending portion 6 and surrounding the same is one end of the auxiliary cylinder D the upper edge of which is adapted to abut against the shoulder 7 formed upon the reducer 1, and also secured to the reduced end portion 6 is the cylinder A, which cylinder has the upper end thereof exteriorly screw threaded for engaging the interior screw threads 8 of the reducer or nipple-1. The lower portion of the reducer 1, is hollowed out to form the water compartment 9 which compartment is connected to the auxiliary suction chamber E by the passages 9 formed in the reduced end portion of the nipple or reducer 1.

Arranged within the'reducer 1, is the valve seat 10, the valve seat being provided at the lower edge thereof with the upwardly diverging exterior wall 11, corresponding with the diverging wall 5 of the reducer 1, for firmly seating within the same. The valve seat 10 is provided with the external screw threads 12 and upon which is arranged the nut 13, the nut being adapted to be screwed upon the threads 12, of the seat 10 for holding the packing 14 rigidly secured upon the valve seat 10 and for bearing the packing against the straight wall of the reducer 1 thus providing a tight joint between the valve seat and the inner wall of the reducer 1, the valve seat 10 is also provided with the upwardly extending tubular portion 15 having screw threads 16 provided at the upper end thereof and upon which threads is arranged the retaining nut 16 and surrounding the portion 15 of the valve seat 10 is the valve 17 having arranged upon the face thereof the valve packing 18 for closing the passages 19 formed in the valve seat 10. Surrounding the collar :20 of the-'valve 17 is the spring 21 the spring being adapted to bear upon the upper face of the valve 17 at one of its ends and having its opposite end seated within the annular recess 2Q, of

the Spring retaining nut 16. The spring 21 being provided for retaining the valve 17 in its normal seated position over the passages 19 which passages connect the water compartment 9 with the water column pipe 2 secured to the screwthreads 2 of the reducer l and abutting against the shoulder 4.

Arranged at the lower ends of the cylinders A and D is the bottom cap 25 the lower interior portion thereof being provided with the perpendicular annular wall 26 which wall terminates in an upwardly diverging wall 27 and it is to be noted that the wall 27 of the cap 25 and the wall 5 of the reducer l are correspondingly inclined for the purpose to be hereinafter described, the central portion of the cap 25 is hollowed out to form the water compartment 28 being internally screw threaded for engaging the external screw threaded lower end f the cylinder A as at 29 the auxiliary cylinder D having its lower end adapted to surround the upper portion of the cap and adapted to be seated against the shoulder 30 formed upon the cap 25, the cap being further provided with the water passages 28 for connecting the compartment 28 with the auxiliary suction chamber E.

Seated within the lower portion of the cap 25, is the valve seat 32 provided for a portion of its length with the exterior vertical wall 33 and the upwardly diverging exterior wall 34 the vertical wall 33, and the diverging wall 34 adapted to be seated within the walls 2G and 27 respectively of the cap 25, the valve seatv32 is further provided with the internal screw threaded end 35 for engaging the suction pipe 35 as shown. The seat 32 is further provided with the screw threaded member 36 and secured thereto is the tubular stem 36, and adjacent the inclined outer wall 34 of the valve seat 32 are arranged the water passages 37 for conveying the water from the suction pipe 35 into the water compartment 28 of the cap 25 upwardly through the water passages 28 into the auxiliary suction chamber E. The tubular stem 36 is provided with the annular flange member 38 to provide the annular recess 39 and into which one end of the spring 40 is seated the opposite end of the spring resting upon the upper surface of the auxiliary admission valve 4l and surrounds the neck 42 of the valve 4l which valve surrounds a portion of the tubular member 36 and is provided with the packing 43 for closing the water passages 37 and held in its normal seated position thereat through the action ofthe spring 40. Upon the upper end of the tubular stem 3G and screw threaded thereon is the suction valve cage 45 provided at its lower end with the upwardly directed annular flange 46 for securing upon the upper face of the flange member 38 of the tubular stem 36 and against the inner wall of the cylinder A., the L-shaped packing ring 47. Upon the upper end of the tubular member 36 is the valve seat 48 against which the suction valve 49 by gravity and assisted by the compression spring 49 therealoove is adapted to be normally seated and upon the top of the cage 45 is arranged the lifting stem 50 having a screw threaded connection 5l with the cage 45 the stem 50 being further provided at its upper end with the nut or head 52.

Arranged within the cylinder A is the elongated piston 55 provided upon the periphery thereof with the series of packing rings 56 the same being E -shaped in cross section and interposed between the rings are the follower rings 57 the packing rings being in pairs and disposed in opposite direction to each respective pair. rlhe lower end of the piston 55 has secured thereon the piston cage 58 through the medium of the screw threaded connections 59 the piston cage 58 being designed for rigidly securing the packing rings 56 and the follower rings 57 in rigidly secured position upon the piston 55 thus providing a tight joint between the packing rings 57 and the piston 55 and the inner wall of the cylinder A. The cage 58 is provided with a spider head 60 provided with the aperture 6l in the center thereof and through which is adapted to pass the lifting stem 5() of the suction valve casing 45, the upper end of the stem and the nut or head 52 being adapted to travel within the tubular passageway 62 of the piston the nut 52 being provided for preventing the stein 50 from passing entirely through the aperture 6l as the same is designed to engage the upper inner surface of the head of the piston cage 58 when it is necessary to withdraw the piston 55 together with the lower valve mechanism' for the purpose of either cleaning or repairing the same.

Mounted within the upper portion of the piston and adapted to travel through the portion l5 of the valve seat l0 is the plunger tube G9 rigidly secured to the piston 55 by the screw threaded connection 66 at its lower end and having secured 'thereto at its upper end through the screw threaded con nection 67 a discharge valve seat 68 having arranged therein the water compartment 70 and further provided with the screw threaded portion 7l in which is secured the screw threaded end of the pump rod 72 and around which rod is arranged the discharge valve 73 provided with the packing 74 for seating upon the face 75 of the valve seat 58 and for normally closing the passage 76 which connects the water compartment 70 with the water column pipe 2 as shown.

rThe operation of the pump will be clearly understood from the following: Assuming that the piston 55 is at its vlowermost position within the cylinder A the discharge valve 73 being closed upon its seat 75, the upward movement of the pump rod 72 within the water column would cause the piston 55 to move upwardly through its connections with the pump rod 72 through the medium of the discharge valve seat 68 and the plunger tube 69 connecting the piston 55 with the pump rod 72, whereby upon the upward movement of the piston 55 a vacuum is created within the water chamber B of the inner cylinder A thus causing the suction upon the suction valve 49 thereby causing the same to be raised from its seat 48 to the uppermost limit within the valve cage 45 whereby water is caused to flow from the suction pipe through the passage 48 of the stem 36 and outwardly into the lower water chamber B. The piston 55 after it has reached the uppermost limit and upon its return to its downward direction which direction against the water within the water chamber B causes the water to pass upwardly through the passage 62 of the piston 55 from thence through the plunger tube 69 into the water compartment 70 of the discharge valve seat 68 through the passages 76 thus unseating the discharge valve 73 from its seat 75 and discharging the water into the water column. At the same time that this operation is taking place the piston 55 in its downward course creates a vacuum in the water chamber C, of the cylinder A thus creating a suction in its wake which suction causes the auxiliary valve 41 to be unseated thus permitting the water to be drawn from the suction pipe 35 through the water passage 37 of the auxiliary Valve seat 32 into the water compartment 28 of the cap 25 thence through the water passages 28 into the auxiliary suction chamber E and thence through the passages 9 into the water compartment 9 of the reducer 1 and the suction chamber C of the cylinder A, whereupon the next upward movement of the piston 55 will force the water outwardly through the passages 19 of the auxiliary discharge valve seat 10 thereby unseating the valve 17 against the action of the spring 21 thus permitting the water to be discharged into the water column as before described, and at the same time that the auxiliary discharge valve 17 is being removed from its seat the auxiliary admission valve 41 having been previously closed by the ceasing of the suction action which was exerted thereupon as well as through the aid of the spring 40 thus preventing the water from flowing backward through the passages 37 and into the suction pipe, and also at thisstage of the operation a repetition of the first operation as before described has taken place, however, in this second operation the valve 17 which has been previously raised to open position under the force of the water thereagainst will thereby close after the same has been relieved of the force exerted thereupon by the water as well as by the suction created by the piston in chamber C upon its next downward stroke the valve 17 also being aided by the spring 21 in being normally seated for preventing the water previously ,discharged in the water column from {iowing backward in the .suction chamber C.

In the construction of the pump constituting my invention it is to be noted that the inclined walls of the reducer and the valve seat arranged therein and the inclined walls of the bottom cap and the valve seat arranged within the same are correspondingly inclined in an upward and outwardly flared direction and so designed for permitting the valve seats and the valves as well as all of the cooperative working parts to be simultaneously withdrawn from the pump barrel for the purpose of cleaning or repairing the same and to obviate the necessity for the'removal of the pump barrel and and the water column during the removing operation.

As will be seen I have provided the lower valve mechanism with the lifting stem of suiicient length to pass through the pistonk cage and in a manner not to interfere with the stroke or operation of the piston but which, when necessity arises for removing the working parts, forms a connection between the piston for withdrawing the lower valve mechanisms upwardly to the top of the ground for the purpose of repairs, etc.

It is to be further noted that in the construction, of a pump of this character the water may be pumped from the bottom of a well through a single suction pipe that withdraws the water or other fluid at both strokes of the piston, thereby doing away with the necessity of the pump being submerged in the water as in the case of other pumps of the double acting type, and as the same is positioned above the top of the water the life of the cylinderand the working parts are greatly preserved and the deleterious result therefrom, especially so if the water should be of a mineral origin, is obviated.

I have here shown and described the preferred form of my invention, though I hereby reserve the right to make such alterations and variations therein as I may deem eX- pedient and which will not depart from the spirit of the invention or conflict with the scope of the claims.

Having thus fully described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a pump, the combination with, a stand pipe, a valve housing, a main cylinder providing a main suction chamber, and an auxiliary cylinder providing an auxiliary suction chamber between said cylinders, of

a nipple or reducer for connecting said stand pipe with said main cylinder and said auxiliary cylinder, said nipple or reducer comprising an internal screw-threaded annular recess formed in its upper portion Jfor receiving the threaded end of' said stand pipe, an annular shoulder within said recess against which the end of said stand pipe is adapted to abut, the inner central wall ci' said nipple or reducer having the upper portion formed vertically, and the lower portion being upwardly diverged to provide a seat for the valve housing having corresponding exterior walls, an annular ring member `formed at the lower end of said nipple and interposed between the upper ends of said main cylinder' and said auxiliary cylinder 'for maintaining the cylinders in rigid spaced relation, the inner wall of said ring member being screw-threaded for engaging the upper screw-threaded end of said main cylinder, the outer wall of said ring member being smooth and surrounded by the upper end of said auxiliary cylinder, an annular shoulder adjacent the upper end of said ring member for abutting against the upper end of said auxiliary cylinder, a water compartment within said nipple, passages formed in said ring member for establishing communication between said auxiliary suction chamber and the upper portion of said main suction chamber, and a piston operating in said main suction chamber for causing suction therein and in said auxiliary suction chamber.

2. 1n a pump, the combination with, a valve housing, a main cylinder providing a main suction chamber, and an auxiliary cylinder providing an auxiliary suction chamber, of a nipple secured to the lower end of said main cylinder and said auxiliary cylinder, the lower portion ot' the inner wall of said nipple being vertical, and the upper portion of said inner wall being upwardly diverged to provide a seat for the valve housing having correspondingly shaped outer walls, a ring member formed at the upper end of said nipple and interposed between the lower ends of said main cylinder and said auxiliary cylinder for maintaining said cylinders in lixed spaced relation, the inner wall of said ring member being screwthreaded for engaging the lower threaded end of said main cylinder, the outer wall oIn said ring member being smoothA and surrounded by the lower end of said auxiliary cylinder, an annular shoulder formed upon said nipple adjacent the inner end of said ring member against which the lower end of said auxiliary cylinder is adapted to abut, a lower water compartment within said nipple, passages within said ring member for establishing communication between said lower water compartment and said auxiliary chamber, and a piston operating in said main suction chamber for creating suction therein and in said auxiliary chamber.

3. In a pump, the combination with, a stand pipe, a main cylinder providing a main suction chamber, an auxiliary cylinder providing an auxiliary suction chamber, of an upper nipple or reducer for connecting said cylinders with said stand pipe, and a lower nipple secured to the lower ends of said cylinders, said upper and said lower nipples'each being provided with opposing ring members having internal screw-threaded walls for engaging the upper and lower screw-threaded ends of said main cylinder, and smooth external walls surrounded by the respective upper and lower ends of said auxiliary cylinder, and a shoulder' formed upon each of said nipples and oppositely disposed to each other to provide abutinents for the respective upper and lower ends ot said auxiliary cylinder, whereby to combine said stand pipe, said cylinders, and said nipples to form a unitary structure.

et. In a pump, the combination with, a stand pipe, a main cylinder providing a main suction chamber, an auxiliary cylinder providing an auxiliary suction chamber, of an upper nipple or reducer for connecting said cylinders with said stand pipe, and a lower nipple secured to the lower ends of said cylinders, said upper and said lower nipples each being provided with opposing ring members having internal screw-threaded walls for engaging the upper and lower screw-threaded ends of said main cylinder, and smooth external walls surrounded by the respective upper and lower ends of said auxiliary cylinder, a shoulder upon each ot' said nipples and oppositely disposed to each other to provide abutments for the respective upper and lower ends oi said auxiliary cylinder, whereby to combine said stand pipe, said cylinders, and said nipples toforma unitary structure, upper and lower valves and valve housings mounted in the respective upper and lower nipples, a piston operating in said main cylinder and having a slidable Connection with said lower valve housing, and a xed connection with the pump rod, and a. suction pipe secured to the lower end of said lower valve housing, said valve housings, said piston, said pump rod, and said suction pipe being capable of ready removal from within the unitary structure and independently thereof.

5. 1n a pump, the combination with, a main cylinder, an auxiliary cylinder, a main suction chamber, a piston therein, an auxiliary suction chamber, a cap secured to the suction ends of said cylinders, a valve seat within said cap, a suction pipe secured to said valve seat, passages through said valve seat, a tubular stem secured in the central passage of said valve seat for establishing communication between said main suction chamber and the suction pipe, an auxiliary valve surrounding said tubular stem for controlling the flow of the fluid from said suction pipe to said auxiliary suction chamber, means for accelerating the closing of said auxiliary valve, a valve arranged at the discharge end of said tubular stem for controlling the flow of the fiuid from said suction pipe to said main suction chamber, and a cage for retaining said valve, said cage having an annular upturned flange designed for retaining the packing means of said tubular stem lirrnly against the lower end of said main cylinder secured to said cap.

6. In a pump, the -combination with, a main cylinder, an auxiliary cylinder, a main suction chamber, an auxiliary suction chamber, a reducer at the discharge ends of said cylinders, a discharge pipe secured thereto, an upper valve seat arranged in said reducer, a piston within said main chamber, a plunger tube secured to said piston for actuating the same and for traveling through said upper valve seat, a discharge valve seat mounted upon said plunger tube, a pump rod secured to said discharge valve seat, a cap secured to the suction ends of said cylinders, a lower valve seat within said cap, a suction pipe secured to said lower valve seat, a tubular stem also secured to said lower valve seat, a valve cage arranged upon said stem, and a lifting stem secured to said cage for removing the same and the lower valve seat and the suction pipe connected thereto when desired.

7. In a pump, the combination with, a main cylinder, an auxiliary cylinder, a main suction chamber, an auxiliary suction chamber, a reducer at the discharge ends of said cylinders, a discharge pipe secured thereto, an upper valve seat arranged in said reducer, a piston within said main chamber, a plunger tube secured to said piston for actuating the same and for traveling through said upper valve seat, a discharge valve seat mounted upon said plunger tube, a pump rod secured to said discharge valve seat, a cap secured to the suction ends of said cylinders, a lower valve seat within said cap, a suction pipe secured to said lower valve seat, a tubular stem also secured to the said lower valve seat, a valve cage arranged upon said stem, and a lifting stem secured to said cage at one of its ends, the opposite end thereof extending into said piston and provided with a head for retaining the same therein, whereby all of the inner working parts may be readily withdrawn from the well independently of the discharge pipe and the main cylinder and the auxiliary cylinder constituting the pump barrel.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

MILLER HARVEY.

Iitnesses:

HUBERT DoMENioI, JANE SMITH.

Copies of this patent may be obtained for ve cents each, by addressing` the Commissioner of Patents,

Washington, ID. G. 

